KR20230053954A - Container for energy storage system having compulsion cooling device - Google Patents

Abstract

A container for an energy storage system equipped with a cooling function according to an embodiment of the present invention includes a container body provided with a predetermined installation space therein, an access floor installed in the lower portion of the installation space, and an upper portion of the access floor, External power system by electrically connecting a number of battery racks, which can accommodate a number of battery modules capable of charging or discharging power in the internal accommodation space, and a number of battery modules placed under the access floor and electrically connecting the external power grid (grid) A power cable that allows power to be charged from a plurality of battery modules and electrically connects a plurality of battery modules and an external load to supply power discharged from the battery module to an external load, and communicates the outside of the container body and the installation space It includes an air duct for supplying outside air to the upper part of the battery rack, and a damper installed on the upper center side of the container body to discharge the air in the installation space.

Description

Container for energy storage system with forced cooling function {CONTAINER FOR ENERGY STORAGE SYSTEM HAVING COMPULSION COOLING DEVICE}

The present invention relates to a container for an energy storage system, and specifically, energy storage equipped with a forced cooling function to prevent damage to facilities inside the container from the outside and to cool heat generated from a battery module or battery cell during power charging and discharging. It is about containers for systems.

ESS (Energy Storage System) is a system to increase the efficiency of power use by receiving and storing idle power from the grid and supplying it to external loads when needed. It was used to secure spare capacity to cope with power generation fluctuations, but recently, the application area is gradually expanding, such as installing an energy storage system in connection with small wind power in island areas where power supply is difficult.

The most important thing in an energy storage system is a battery module. As a battery having a high energy density is used, the possibility of fire or explosion due to high temperature or overcharging during charging or discharging of the battery increases.

In addition, when the thermal management of the battery module is not normally performed, the durability and lifespan of the battery are fatally reduced, which consequently greatly affects the performance of power storage and supply to be provided by the energy storage system.

In addition to this, if the thermal management of the battery module used in the energy storage system is abnormal, temperature deviations occur between the battery cells constituting the battery module, which is a problem in that the entire battery module must be replaced even though there are many usable battery cells. will cause

In this regard, in the prior literature on the prior art prepared to ensure that the thermal management of battery modules in the energy storage system is normally performed, Korean Patent Registration No. 10-1829093 "Cooling air flow control system and method of battery system" (hereinafter , referred to as 'prior art').

However, in the case of an existing energy storage system including the prior art or a device to which an energy storage system is applied, the supply form of cold air considering the fluidity of cold air used for thermal management of the battery module is different for each battery module location, so the temperature according to the battery module location There was a problem that the deviation could not be resolved.

Furthermore, in the case of an existing energy storage system including the prior art or a device to which an energy storage system is applied, the high-temperature heat generation problem generated from the cable used as a power transfer path during charging or discharging of the battery module cannot be solved, There was a problem in that movement performance and efficiency for storing and supplying power deteriorated, and durability and lifespan of the cable rapidly deteriorated.

In addition to this heating problem, energy storage systems installed in island areas have an additional problem of preventing corrosion due to salt.

Republic of Korea Patent Publication 10-2016-0047345 (published on 2016.05.02)

The present invention was created to solve the above problems, and an object of the present invention is to provide cool air evenly throughout the energy storage system or the device to which the energy storage system is applied so that the same level of thermal management is achieved regardless of the location of the battery module. It is to provide technology that can be achieved.

In addition, the present invention was created to solve the above problems, and another object of the present invention is to provide a moving path for charging and discharging power through an electrical connection with a battery module in an energy storage system or a device to which the energy storage system is applied. It is to provide a technology in which cold air is provided to the cable to be provided so that normal thermal management can be performed at the same time as in a battery module.

In addition, the present invention was created to solve the problem of corrosion caused by air containing salt, and provides a technology to increase durability of an energy storage system by blocking salt in the air to reduce factors that cause corrosion. are doing

A container for an energy storage system equipped with a cooling function according to an embodiment of the present invention includes a container body provided with a predetermined installation space therein, an access floor installed in the lower portion of the installation space, and an upper portion of the access floor, A plurality of battery racks in which a plurality of battery modules 122 capable of charging or discharging power are accommodated in the internal accommodation space, disposed below the access floor, and electrically connecting a plurality of battery modules and an external power grid (grid) A power cable that allows power to be charged in a plurality of battery modules from an external power system and electrically connects a plurality of battery modules and an external load to supply power discharged from the battery module to an external load, and installed with the outside of the container body It includes an air duct for communicating the space and supplying outside air to the top of the battery rack, and a damper installed at the upper center side of the container body to discharge the inside of the installation space.

In the battery rack of the container for an energy storage system equipped with a cooling function according to an embodiment of the present invention, a plurality of first blowing fans disposed on one side of the internal accommodation space to transfer the outside air supplied from the air duct to the battery module; It is formed on the other side of the receiving space and further includes a plurality of discharge holes through which the outside air transported to the battery module by the first blowing fan is discharged to the damper.

In the access floor of the container for an energy storage system equipped with a cooling function according to an embodiment of the present invention, a transmission hole through which outside air supplied from an air duct is transmitted is formed in communication with the internal accommodation space, and a filter is provided at a position corresponding to the damper. An installation hole is formed, and a decontamination filter unit is inserted into the filter installation hole to filter salt in the air below the access floor.

The decontamination filter unit of the energy storage system container having a cooling function according to an embodiment of the present invention is composed of a filter housing inserted into the filter installation hole and a decontamination filter disposed in the filter housing, and the center of the filter housing is opened vertically. An opening opening is formed, a step on which a decontamination filter is disposed is formed adjacent to the opening, and a locking step is formed outside the upper part of the filter housing to be seated on the surface adjacent to the filter installation hole of the access floor, and the access floor is hooked A seating groove in which the chin is seated is formed so that the upper surface of the access floor and the upper surface of the decontamination filter have the same height.

A bracket is extended below the step of the container for an energy storage system equipped with a cooling function according to an embodiment of the present invention, and a second blowing fan is disposed on the bracket to transfer outside air under the access floor to the decontamination filter.

An extension part is formed in the direction of the filter installation hole at the bottom of the inner surface of the access floor where the filter installation hole of the container for the energy storage system equipped with a cooling function according to an embodiment of the present invention is formed, and the decontamination filter part has an open surface at the center and side. is formed, both sides of which are bent downward to contact the upper surface of the extension portion, and a decontamination filter formed in a shape corresponding to the filter housing and disposed on the lower surface of the filter housing, wherein the filter housing and the filter installation hole are formed A gap is formed between the inner surfaces of the access floor.

A cover having a plurality of openings is disposed on an upper surface of a filter housing of a container for an energy storage system having a cooling function according to an embodiment of the present invention, and an upper surface of the cover and an upper surface of an access floor form the same height.

A second blowing fan is disposed on the lower surface of the filter housing of the energy storage system container having a cooling function according to an embodiment of the present invention, and the decontamination filter is configured to reduce the flow resistance of outside air transported by the second blowing fan. resistance reduction holes are formed.

A tray is disposed under the decontamination filter unit of the container for an energy storage system equipped with a cooling function according to an embodiment of the present invention, the tray is composed of a bottom surface and a side surface, and the side surface in the direction of the delivery hole is formed lower than the side surface. On the lower surface of the tray, irregularities having a triangular cross section are formed, and among the surfaces constituting the irregularities, the side of the delivery hole is formed at a smaller angle than the angle at which the surface in the direction of the decontamination filter unit is formed.

A condensate discharge port is formed on the lower surface corresponding to the decontamination filter unit of the tray of the container for the energy storage system equipped with a cooling function according to an embodiment of the present invention, and the lower surface of the power line cable is formed on the bottom surface of the container body. A power cable placement groove is formed, and a condensate transport groove connected to a lower portion of the condensate outlet is formed in the power cable placement groove.

According to the present invention, there are the following effects.

It is accommodated in multiple battery racks in a container to which an energy storage system is applied, and cool air can be provided evenly and evenly throughout a number of battery modules stacked vertically on the ground from the top to the bottom of the battery rack. There is no deviation in the cool air supply level and thermal management form between the battery module accommodated in the battery module and the battery module accommodated in the lower part of the battery rack, preventing the durability and lifespan of the battery module from decreasing due to abnormal thermal management, and furthermore, the battery module It is possible to maintain excellent power charging and discharging performance efficiency.

In addition, the cold air drawn and moved to the lower part of the battery rack through the blower fan installed on the access floor where the battery rack is arranged is delivered to the power cable passing through the open space at the lower part of the access floor through the cold air transmission hole, so that the power cable is charged or discharged. The problem of heat generation can be solved.

In addition, the risk of corrosion can be reduced by filtering the salt contained in the cold air through the decontamination filter.

1 is a cross-sectional view schematically showing the internal structure and installation form of a battery rack in a container to which the energy storage system of the present invention is applied.
FIG. 2 is a cross-sectional view schematically illustrating an installation form of a decontamination filter unit and an access floor shown in FIG. 1 .
3 is a perspective view showing a tray below the decontamination filter unit shown in the first diagram.
4 is a cross-sectional view according to another embodiment schematically showing an installation form of the decontamination filter unit and the access floor shown in FIG. 1;
FIG. 5 is a partial perspective view according to an exemplary embodiment schematically illustrating an installation form of a decontamination filter unit and an access floor shown in FIG. 4 .
6 is a perspective view of a conceptual diagram and an outside air guide plate of a battery rack in which an outside air guide plate is installed.

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only, and may be modified and implemented in various forms. Therefore, the embodiments are not limited to the specific disclosed form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various components, such terms should only be construed for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element.

It should be understood that when an element is referred to as being “connected” to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, but one or more other features or numbers, It should be understood that the presence or addition of steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this specification, it should not be interpreted in an ideal or excessively formal meaning. don't

1 is a cross-sectional view schematically showing the internal structure and installation form of a battery rack in a container to which the energy storage system of the present invention is applied, and FIG. 2 schematically shows the installation form of the decontamination filter unit and the access floor shown in FIG. 1 It is a cross-sectional view, and FIG. 3 is a perspective view showing the tray below the decontamination filter unit shown in FIG.

4 is a cross-sectional view according to another embodiment schematically showing the installation form of the decontamination filter unit and the access floor shown in FIG. 1, and FIG. 5 is a schematic view of the installation form of the decontamination filter unit and the access floor shown in FIG. It is a partial perspective view according to the illustrated embodiment, and FIG. 6 is a conceptual diagram of a battery rack having an outside air guide plate installed and a perspective view of the outside air guide plate.

Referring to Figure 1, which is a cross-sectional view schematically showing the internal structure and installation form of a battery rack in a container to which the energy storage system of the present invention is applied, a container for an energy storage system equipped with a forced cooling function (hereinafter referred to as 'container') is composed of a container body 100, a battery rack 120, a power cable 130, an air duct 140 and a damper 150.

The container body 100 is a housing constituting the entire body of the container, and the battery rack 120, the power cable 130, the air duct 140 and the damper 150, etc. may be installed therein. A predetermined installation space 101 is formed so that

An access floor 110 is installed at the bottom of the container body 100 to partition a space where the battery rack 120 and the power cable (130) to be described later will be disposed.

The battery rack 120 is installed on the upper surface of the access floor 110 within the installation space 101 inside the container body 100. A plurality of battery modules 122 capable of charging or discharging power are accommodated in the battery rack 120, the internal accommodation space 121, as shown in FIG. A plurality of these battery racks 120 may be installed inside the container body 100 as shown in FIG. 1, and only one may be installed depending on the required capacity.

The battery module 122 accommodated in the internal accommodation space 121 of the battery rack 120 is accommodated in a form of being stacked from top to bottom horizontally with respect to the ground.

The power cable 130 electrically connects a plurality of battery modules 122 and an external power grid (grid), and electrically connects a plurality of battery modules 122 and an external load on the demand side such as a home or a factory to electrically connect the electrical connection network. form

Power supplied from an external power system such as a power plant, a substation, a transmission line, a separate power generation module, etc. through the power cable 130 is a plurality of battery modules 122 in a plurality of battery racks 120 through the power cable 130. ) is transmitted to the plurality of battery modules 122 are charged with power, and the power stored in the plurality of battery modules 122 in the plurality of battery racks 120 is discharged through the power cable ( 130) is supplied to external loads on the demand side such as homes or factories that require power. In this process, since heat is generated in the power cable 130, in order to prevent the heat generated in the power cable 130 from affecting the battery module 122, the power cable 130 is placed under the access floor 110. are placed

The air duct 140 supplies outside air by communicating the outside of the container body 100 and the internal accommodation space 121 of the battery rack 120, and as described above, the battery module 122 is charged or discharged with power. Since heat is generated, cooling is required, and for this purpose, an air duct 140 is installed in the internal accommodation space 121 of the battery rack 120 to supply outside air to the battery module 122 so that the battery module 122 heat can be cooled. At this time, the air duct 120 allows the supplied outside air to be supplied to the upper part of the inner accommodating space 121 so that the outside air supplied by the air duct 120 can naturally move downward by convection.

The damper 150 selectively discharges the inside of the installation space 101, and is installed on the upper center side of the container body 100.

When two battery racks 120 are installed as shown in FIG. 1 , the damper 150 is installed on top of the space between the battery racks 120 .

In the battery rack 120 described above, a plurality of first blowing fans 124 are disposed on one side of the internal accommodation space 121 and transport the outside air supplied from the air duct 140 to the battery module 122, , It is formed on the other side of the inner receiving space 121, which is opposite to the first blowing fan 124, so that the outside air transferred to the battery module 122 by the first blowing fan 124 can be discharged in the direction of the damper 150 A discharge hole 126 is formed corresponding to each battery module 122 . Therefore, the outside air supplied from the air duct 140 is transferred to the battery module 122 by the convection and first blowing fan 124 to cool the battery module 122, and through the discharge hole 126 the battery rack ( 120) is discharged from the inner accommodation space 121 and is discharged to the damper 150.

It is preferable to form the discharge hole 126 on the lower side of the damper 150 so that the circulation of outside air can be more effective. ) is preferably placed on the opposite side of

As shown in FIG. 1, the access floor 110 is formed with a transmission hole 111 communicating with the internal accommodation space 121 and transmitting the outside air supplied from the air duct 140, corresponding to the damper 150 A filter installation hole 113 is formed at the position. Therefore, the outside air moved to the lower part of the access floor 110 through the transmission hole 111 moves through the filter installation hole 113, and while the outside air moves, it comes into contact with the power cable 130 and is generated in the power cable 130 The heat is transferred and the temperature of the power cable 130 is lowered. As shown in FIG. 1 , a blowing fan for introducing outside air into the lower part of the access floor 110 is installed in the transmission hole 111 .

When the container according to the present invention is installed in an island region, outside air introduced through the air duct 140 may contain salt. Salt increases the possibility of corroding various metal parts installed in the container, so it is preferable to remove it, but it is preferable to install a decontamination (salt damage) filter to remove salt in the outside air. When the decontamination filter is installed in a flow path through which the outside air moves, flow resistance is generated due to the decontamination filter, and thus heat generated from the battery module 122 and the power cable 130 cannot be effectively discharged. Therefore, it is preferable to install the decontamination filter unit 115 including the decontamination filter in the filter installation hole 113 under the access floor 110.

Referring to (a) of FIG. 2, the decontamination filter unit 115 is composed of a filter housing 115a and a decontamination filter 115b.

The filter housing 115a supports the decontamination filter 115b and is coupled to the filter installation hole 113. An opening 115a1 is formed in the center of the filter housing 115a and is opened vertically. On the inner surface of the filter housing 115a in which the opening 115a1 is formed adjacent to 115a1, a step 115a2 is formed in the central direction of the opening 115a1 to support the decontamination filter 115b. do. In addition, a hooking jaw 115a3 seated on a surface adjacent to the filter installation hole 113 of the access floor 110 protrudes from the upper outer side of the filter housing 115a, and the hooking jaw 115a3 is seated on the access floor. A seating groove 113a is formed.

In this case, by appropriately adjusting the height of the seating groove 113a, the upper surface of the access floor 110 and the upper surface of the filter housing 115a can form the same height, so that the operator opens the container for container maintenance When entering the filter housing (115a), it is desirable not to stumble and fall.

Referring to (b) of FIG. 2, which is another embodiment, a bracket 115a4 is formed to extend under the step 115a2 of the filter housing 115a, and the bracket 115a4 has a decontamination filter for the outside air under the access floor 110 ( It is preferable that a second blowing fan 117 forcibly conveying the air to 115b) and guiding it to the damper 150 is disposed.

At this time, since the decontamination filter 115b of the decontamination filter unit 115 is replaced periodically or according to conditions, the second blowing fan 117 is preferably coupled to the bracket 115a4 so as to be easily detachable.

Since salt components and condensate filtered by the decontamination filter 115a may fall and pile up at the bottom of the decontamination filter unit 115, a separate tray 170 is provided at the bottom of the decontamination filter unit 115 as shown in FIG. It is desirable to be able to remove salt components and condensate accumulated by being disposed. The tray 170 is composed of a lower surface 172 and a side surface 174, and the side of the side in the direction of the delivery hole 111 controls the flow of outside air moving to the decontamination filter unit 115 through the delivery hole 111. It is desirable to form it low so as not to interfere. In addition, the lower surface 174 of the tray 170 is formed with concavo-convex 176 having a triangular cross section to prevent salt components or condensate filtered by the decontamination filter 115a from scattering to the power cable 130. . At this time, the angle between the surface 176a in the direction corresponding to the delivery hole 111 and the lower surface 172 of the tray 170 among the surfaces forming the triangular concavo-convex 176 forms the triangular concavo-convex 176. It is preferable that the angle between the surface in the direction corresponding to the decontamination filter unit 115 and the lower surface 176b of the tray 170 is smaller than the angle between the surfaces to be used.

In addition, when the tray 170 is formed larger than the width of the decontamination filter unit 115, the lower surface 172 of the tray 170 under the decontamination filter unit 115 is not formed with separate irregularities so that the salt components and It is preferable to form a space 178 in which condensate can accumulate.

In addition, a power cable placement groove 102a is formed on the bottom surface 102 of the container body, in which the lower portion of the power line cable 130 is disposed, and a condensate outlet through which condensate is discharged is formed in the space 178 of the lower surface 172 of the tray 170. (172a) is formed, and a condensate transport groove (102b) connected to the condensate discharge port (172a) of the tray 170 is formed in the power cable placement groove (102a) so that the condensate in the space 178 is formed in the condensate transport groove (102b). and moves to the outer surface of the power cable 130 through the power cable placement groove 102a to cool the power cable 130.

FIG. 4, which is a cross-sectional view according to another embodiment schematically showing the installation form of the decontamination filter unit and the access floor shown in FIG. 1, and an embodiment schematically showing the installation form of the decontamination filter unit and the access floor shown in FIG. Referring to FIG. 5, which is a partial perspective view according to, an extension part 119 is formed in the direction of the filter installation hole 113 at the bottom of the inner surface of the access floor 110 where the filter installation hole 113 is formed, and the decontamination filter unit ( 115) is formed in a shape corresponding to the filter housing 115a' having an open surface formed in the center and on the side surface and bent downward on both sides to contact the upper surface of the extension part 119, and the filter housing 115a'. It consists of a decontamination filter (115b') disposed on the lower surface of (115a'), and a gap (G) is formed between the filter housing (115a') and the inner surface of the access floor 110 where the filter installation hole 113 is formed. You may. In this case, some of the outdoor air passing through the battery rack 120 through the gap G can move toward the decontamination filter unit 115, and the salt content and condensate inside the outdoor air can accumulate in the gap G. do.

A cover 160 having a plurality of openings may be disposed on the upper surface of the filter housing 115a' as shown in FIG. 4 . As described above, since the container is inspected periodically, the worker performing the inspection may step on the decontamination filter unit 115 during work, and the decontamination filter unit 115 may be damaged at this time, so the filter housing 115a' It is preferable that a cover 160 having a plurality of openings is disposed on the upper surface of the cover so that outside air can move.

At this time, it is preferable to form the upper surface of the cover 160 and the upper surface of the access floor 110 by varying the height of the cover 160 or the position of the extension part 119 to form the same height.

In addition, as described above, the second blowing fan 117 may be disposed on the lower surface of the filter housing 115a', and the flow resistance of the outside air transported by the second blowing fan 117 may be reduced in the decontamination filter 115b. To reduce the resistance, a resistance reduction hole 115b1 may be formed as shown in FIG. 5 .

In addition, as shown in FIG. 6, on the inner surface of the first blowing fan 124 direction surface of the surface forming the internal accommodation space 121 formed by the battery rack 160, a plurality of outdoor air guide plates having an inclination in the downward direction. It is preferable that 129 is disposed so that the flow rate of air moving to the battery module 122 can be uniform according to the height. To this end, the outside air guide plate 129 disposed on the upper part of the plurality of outside air guide plates 129 is formed shorter than the outside air guide plate 129 disposed on the lower part to generate a difference in the flow rate of the outside air, thereby causing the outside air to move toward the lower battery module 122. It is possible to increase the flow rate of In this case, the entire battery module 120 is uniformly cooled, so that heat management of the entire battery module can be effectively performed.

As shown in FIG. 6, a 'c'-shaped cutout 129a is formed in the outside air guide plate 129, and the cutout 129a is bent in the direction of the battery module 122 to form a guide pin 129b. Induce outdoor air effectively.

As described above, although the embodiments have been described with limited drawings, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved.

100: container body 101: installation space
110: access floor 111: transmission hole
113: installation hole 113a: seating groove
115: decontamination filter unit 115a, 115a': filter housing
115a1: opening 115a2: step
115a3: locking jaw 115a4: bracket
115b, 115b': decontamination filter 115b1: resistance reduction hole
117: second blowing fan 119: extension
120: battery rack 121: internal accommodation space
122: battery module 124: first blowing fan
126: discharge hole 130: power cable
140: air duct 150: damper
160: cover G: spacing

Claims (6)

A container body provided with a predetermined installation space therein;
an access floor installed in the lower part of the installation space;
A plurality of battery racks installed on the access floor and accommodating a plurality of battery modules capable of charging or discharging power in an internal accommodation space;
Disposed below the access floor, electrically connecting the plurality of battery modules and an external power grid (grid) to charge the plurality of battery modules with power from the external power grid, and the plurality of battery modules and an external load a power cable that electrically connects the power discharged from the battery module to be supplied to the external load;
An air duct for supplying outside air to an upper portion of the inner accommodation space of the battery rack by communicating the container body outside and the inner accommodation space; and
Including; a damper installed on the upper center side of the container body to discharge bets in the installation space,
In the battery rack
A plurality of first blowing fans disposed on one side of the inner accommodating space to transport outside air supplied from the air duct to the battery module; Further comprising a plurality of discharge holes for discharging the outside air to the damper,
On the access floor
A delivery hole communicating with the inner accommodation space to transmit the outside air supplied from the air duct is formed, a filter installation hole is formed at a position corresponding to the damper, and is inserted into the filter installation hole to remove the air below the access floor A container for an energy storage system equipped with a forced cooling function, characterized in that it further comprises a decontamination filter for filtering salt out of the container.
According to claim 1,
The decontamination filter part
It consists of a filter housing inserted into the filter installation hole and a decontamination filter disposed in the filter housing,
An opening opening vertically is formed in the center of the filter housing, and a step on which the decontamination filter is disposed is formed adjacent to the opening, and an upper outer portion of the filter housing is adjacent to the filter installation hole of the access floor. A locking jaw is formed to be seated on the surface,
A container for an energy storage system equipped with a forced cooling function, characterized in that a seating groove in which the locking jaw is seated is formed on the access floor so that an upper surface of the access floor and an upper surface of the filter housing form the same height.
According to claim 2,
A bracket is formed extending below the step,
A container for an energy storage system having a forced cooling function, characterized in that a second blowing fan is disposed on the bracket to transfer outdoor air under the access floor to the decontamination filter.
According to claim 1,
An extension portion is formed in the direction of the filter installation hole at the bottom of the inner surface of the access floor where the filter installation hole is formed,
The decontamination filter unit has an open surface formed in the center and on the side, and both sides are bent downward to contact the upper surface of the extension part, and a filter housing formed in a shape corresponding to the filter housing and disposed on the lower surface of the filter housing. A container for an energy storage system equipped with a forced cooling function, characterized in that a gap is formed between the filter housing and an inner surface of the access floor where the filter installation hole is formed.
According to claim 4,
A cover having a plurality of openings is disposed on the upper surface of the filter housing,
A container for an energy storage system having a cooling function, characterized in that the upper surface of the cover and the upper surface of the access floor form the same height.
According to any one of claims 4 or 5,
A second blowing fan is disposed on the lower surface of the filter housing,
A container for an energy storage system equipped with a cooling function, characterized in that a resistance reducing hole is formed in the decontamination filter to reduce the flow resistance of the outside air transported by the second blowing fan.

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